Calculates buffer size based on pixel format. Returns a tuple of (stride, total_size) where: - stride: bytes per row - total_size: total buffer size in bytes
(width: u32, height: u32, format: PixelFormat)
| 278 | /// - stride: bytes per row |
| 279 | /// - total_size: total buffer size in bytes |
| 280 | fn calculate_buffer_size(width: u32, height: u32, format: PixelFormat) -> (usize, usize) { |
| 281 | let h = height as usize; |
| 282 | let w = width as usize; |
| 283 | |
| 284 | match format { |
| 285 | PixelFormat::Known(FourCC::NV12) | PixelFormat::Known(FourCC::YV12) => { |
| 286 | let y_plane = w * h; |
| 287 | let uv_plane = w * h.div_ceil(2); |
| 288 | (w, y_plane + uv_plane) |
| 289 | } |
| 290 | PixelFormat::Known(FourCC::YUYV) | PixelFormat::Known(FourCC::UYVY) => { |
| 291 | let stride = w * 2; |
| 292 | (stride, stride * h) |
| 293 | } |
| 294 | _ => { |
| 295 | let bpp = format.bpp_estimate() as usize; |
| 296 | let stride = w * bpp / 8; |
| 297 | (stride, stride * h) |
| 298 | } |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | /// Copies frame data from an IMFSample to the linear buffer. |
| 303 | fn copy_sample_to_linear_buffer(&mut self, sample: &IMFSample) -> Result<()> { |
nothing calls this directly
no test coverage detected